Material: Stone This item was displayed at my parents' home. Details are unknown. There are some parts that appear to be chipped. Please refrain from purchasing if you are sensitive to the condition, as this is a long-term home storage item. Length: Approximately 24cm Thickness: Approximately 4.6cm Weight: Approximately 1390g Google Lens AI assessment: It is highly likely that this is a "Ryukei stone" (Ryukeiseki) from Tatsuno Town, Nagano Prefecture, and a "Ryukei inkstone" (Ryukeiken) made from it. The box is not included, so it will be sent with simple packaging. Thank you.